Previously mentioned Unroll.me is great at keeping your inbox clutter-free by automatically sweeping up newsletters, notifications and other subscriptions Now, it also lets you block senders and spammers quickly and easily, no matter what email provider you use.
Unroll.me is free, and works with Gmail, Yahoo!, iCloud and Outlook.com. While most of those providers give you a way to block or filter emails from specific senders, not all of them make it easy, and some put an artificial limit on the number of people you can block. Unroll.me does away with having to set up blocked senders and filtering on each of your accounts, and lets you do it all in one place.
Unroll.me will import the names from your contacts list or the people who have most recently emailed you. Then you can go through that list of people and select the ones you don't want to get mail from. That's all there is to it. Their email won't even land in your inbox -- it will vanish as if it had never arrived. Hit the link below to try it out.